U.S.-Australia Cooperative Research: High Temperature Wave Speeds of Mantle Minerals and Their Seismological Implications

美澳合作研究：地幔矿物的高温波速及其地震学意义

• 批准号: 0233849
• 负责人: Robert Liebermann
• 金额: --
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-02-01 至 2009-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0233849&HistoricalAwards=false
• 关键词: U.S.; Australia; Cooperative; Research; Temperature

0233849LiebermannThis award facilitates collaboration in geophysics research between two world class research groups led by Professor Robert Liebermann of Stony Brook University and Professor Ian Jackson of the Australian National University in Canberra, Australia. In recent years the two groups have separately developed novel experimental techniques for measuring the temperature dependence of elastic wave speeds in laboratory prepared specimens that accurately represent the minerals of the earth's transition zone, 400 to 700 km below the surface. They plan to use these to study the mixed pressure-temperature dependence of wave speeds in fabricated materials exposed to similar temperature regimes but very different pressure regimes.The interpretation of seismological models for the earth's interior in terms of chemical composition, mineralogy and temperature requires laboratory-derived information concerning the elastic wave speeds of the relevant minerals and also their pressure and temperature dependence. This collaboration will advance the understanding of these relations through the parallel use of various complementary techniques. The collaboration will also provide international experience for several early career/postdoctoral scientists and graduate students, including one from a historically black university.Increased knowledge of pressure-temperature dependence will improve the inference of chemical composition, mineralogical make-up and temperature variations within the earth's mantle

0233849 Liebermannthis奖促进了由Stony Brook大学的罗伯特·利伯曼（Robert Liebermann）领导的两个世界一流研究小组之间的地球物理研究合作，以及澳大利亚堪培拉的澳大利亚国立大学的伊恩·杰克逊教授。 近年来，两组分别开发了新型的实验技术，用于测量实验室准备的样品中弹性波速度的温度依赖性，这些试样准确地代表了地球过渡区的矿物质，在地面以下400至700 km。 他们计划使用它们来研究暴露于相似温度方案但压力方案非常不同的制造材料中波速的混合压力 - 温度依赖性。就化学组成，矿物学和温度而言，对地球内部的地震学模型的解释需要实验室衍生的有关相关矿物质和温度依赖性的弹性波速度的实验室衍生的信息。 这种合作将通过平行使用各种互补技术来提高对这些关系的理解。 该合作还将为几个早期的职业/博士后科学家和研究生提供国际经验，其中包括一所历史悠久的黑人大学。对压力 - 温度依赖的知识将改善地球大衣中化学成分，矿物学构成和温度变化的推断